Sound-recording apparatus.



H. W. ROGERS.

SOUND RECORDING APPARATUS.

APPLIGATION FILED 001211.19111.

1,1 19,317. Patented Dec. 1, 1911 2 BHEETB-'SHEBT 1.

MWF

KWm'entor Attorneys H. W. ROGERS.

SOUND RECORDING APPARATUS.

APPLICATION FILED ooT.11. 1913.

1,119,317. Patented Deo.1,1914.

2 SHEETS-SHEET 2.

1v Mm ff- @Nw-NJ M//w/Zyflnventor Attorneys HARRISON W. ROGERS, 0F NEWYORK, N. Y.

SOND-RECOBDING APPARATUS.

Specification of Letters Patent.

Patented lDec. 1, 1914.

Applicatonled October 11, 1913. Serial No. 794,631.

To all whom it may concern.'

Be it known that I, HARRISON W. Roenes', a citizen of the United States,residing at New York, in the county of New York andl '.vention being theprovision of a simple mechanism by means of which the throw of thestylus carrying member is regulated as is also the armature controlledby the electromagnet, which forms a part of a bi-polar structure,somewhat similar to the usual form of telephone receiver.

With the foregoing and other objects in View which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being noted that changes in the preciseembodiment of the invention herein disclosed can be made with-` in thescope of what is claimed without departing from the spirit of theinvention.

In the drawings-Figure 1V is a view in elevation and in diagram of thepresent apparatus. Fig. 2 is an enlarged view of a portion of the stand,with the recording apparatus in longitudinal section. Fig. 3 is a topplan View upon a small scale of the complete cabinet, supporting arm andrecording device. Fig. 4 is an end view of the recording device takenfrom the stylus carrying portion thereof. Fig. 5 is a section taken online 5--5 of Fig. 2.

Referring to the drawings, the numeral 1 designates the cabinet orstand, 0f the recording machine, which has supported at one sidethereof, the upstanding post 2, which by means of the screw 3 forms a'pivotal support for the arm- 4. This arm has mounted upon the free endthereof, the adjustable counterbalancing weight 5, while attached to theydepending end thereof,l is

the electrically actuated recording device 6.

This device, as clearly shown in detail, in Fig..2, consists of an outercasing havin the head 7, and carrying therewithin the b1- polarpermanent magnet 8. Connected to l the poles of the magnet 8 is one ormore electro1nagnets9, the cores 10 of `which are disposed to affect thepivoted armature 23,

as will presently appear.

Detachably connected tothe opposite end of the casing from the head 7 isa disk cap 11, provided with the central aperture 12 and with thedownwardly depending and outwardly curved arm 13 in whose apertured andbifurcated end 14 is mounted the removable pin 15 which is adapted toseat in one of the apertures 16. of the stylus carrying rod 17 and thusproperly support the rod 17 so that the stylus or needle 18 will bedisposed in recording relation to the wax disk 19, which is disposed tobe rotated by any mechanism (not shown) disposed within the cabinet orcasing 1. A pin 20 is adapted to be inserted in any one of the apertures21 at the upper end of the rod 17 to pivotally connect the rod or bar 22to the upper end of said rod 17, suchI rod 22 being extended through theaperture 12 of the disk 11 and operably connected to the free end of thearmature 23. This armature 23 is piv- 'oted at 24 to the bracket 25carried by the casing of the recording apparatus, the armature beingdisposed in attractive relation to the core 10 of the coil 9 so that thearmature 23 is thus influenced by the fluctuations of current so thatthe rod 17 is vibrated and consequently the stylus and needle 18 isvibrated to produce the desired or lateralV sound producing indentationsupon the disk 19. The disk 19 is a spiral groove disk, the grooves beingprimarily formed therein so that the rotation of such disk during theproducing of a record will cause the arm 4 and consequently therecording device 6 through the engagement of the stylus or needle 18with such groove to move from the outer periphery of the disk toward thecenter, or vice versa, as may be desired.

ing the armature 23 and consequently thel air gap between it and thepole or core 10, a rod 26 is connected to the rod or bar 22 and isoperably connected to the lever 27, said lever 27 being mounted in thebracket 28 while the end of the lever opposite to the rod 26 isoperablyconnected to the threaded 1n order to provide a means for adjustrod29which by means of the adjusting nut 30 is operated to tilt the lever andconsequentl move the armature y23 to and from the po e 10 of the magnet9. By this means,

the armature 23 may be properly adjusted to regulate the air gap andthus secure the best possible results in making the record.

A diaphragm 31 may or may not be car.

32 and v32 are led from the coil 9 to the respective binding posts 33and 33 mounted in and insulated from the cap 7. As shown in Fig. l, thebatteries 34, which may be taken indicative of any source of electricalenergy, have the circuit conductor 35 led therefrom and disposed in thesaid conductor either in multiple or in series, are a plurality ofmicrophone transmitters 36, which are operably connected to the bindingposts 33 and 33 to thus influence thenelectromagnet 9 and consequentlyits pole or core l0. A switch 37 is connected in the circuit so thatthecircuit may be opened at any de sired time.

What is claimed is:

1. A recording apparatus including a permanent magnet, a casing, coils,each having a pole piece under the iniuence of the permanent-magnet, apivoted armature mounted within the casing and disposed with its freeend in attractive relation to the pole pieces,

aystylus guiding member pivoted intermeamaai? .diate of its ends to thecasing exteriorly thereof, means Ycapable of being iiexedv connectingthe free end of said member to the l armature, and manually operablemeans for exing said connection to regulate the air gap between the polepieces and armature.

in attractive relation to the pole pieces, a

stylus guiding member pivoted intermediate of its ends :to the casingexteriorly thereof,

means capable of being flexed connecting the freeendof said member tothe armature, a lever pivoted intermediate of its ends within thecasing, a rod connecting one free end of the lever to the connection, athreaded stem connected to the other end of the lever and extendingeXteriorly of the casing, and a manually operable nut upon 'the threadedstem for actuating the lever to flex vthe connection to regulate the airgap between the armature and the pole pieces.

ln testimony that. l claim the foregoing as my own, li have heretoaiiiXed my signature 1n the presence of two witnesses.

HARRISON wjnoenns.

Witnesses:

FRED J. WHELAN, ANNA M. Soni/inns.

